Blisters When You Walk Higher Miles. Walking 10 miles (over 3 hours), even if you are used to walking for six miles, is more of a challenge. You can do it, but most people are likely to develop blisters in new places. Shoes and gear that worked fine for two hours may not be ideal for four hours.
How the Aurora Borealis occur. The Northern Lights are caused by the interaction of the solar wind - a stream of charged particles escaping the Sun - and our planet's magnetic field and atmosphere.
Northern Lights near the town of Svovaer in the Lofoten Islands Why Go: The northern town of TromsÃ¸ teems with Aurora Borealis activity when those extended summer days are long gone. Its location above the Arctic Circle, and within the Northern Lights zone, makes it one of the top places to view shimmering green lights.